US5277416A - Device for feeding paper into a facsimile system, copy machine or other device - Google Patents

Device for feeding paper into a facsimile system, copy machine or other device Download PDF

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Publication number
US5277416A
US5277416A US07/485,490 US48549090A US5277416A US 5277416 A US5277416 A US 5277416A US 48549090 A US48549090 A US 48549090A US 5277416 A US5277416 A US 5277416A
Authority
US
United States
Prior art keywords
pick
roll
documents
protrusions
lowermost
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/485,490
Other languages
English (en)
Inventor
Hyoung-Chae Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KIM, HYOUNG-CHAE
Application granted granted Critical
Publication of US5277416A publication Critical patent/US5277416A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/08—Mechanisms for mounting or holding the sheet around the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
    • B65H3/5238—Retainers of the pad-type, e.g. friction pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/063—Rollers or like rotary separators separating from the bottom of pile
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/10—1,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/12—1,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B65H2401/11—Polymer compositions

Definitions

  • the present invention generally concerns a paper feeder for use in an office automation (O/A) system such as a copying machine or a facsimile system and, more particularly, a device for feeding stacked documents accurately one by one.
  • O/A office automation
  • FIG. 1 illustrates a conventional document feeding device for a facsimile
  • the device comprises a table 11 for loading the stacked documents, 20 a pick-up roll 12 for picking up the lowermost document of the stacked documents, and a pick-up rubber 14 for cooperating with the pick-up roll 12 so, as to only convey the lowermost document into the facsimile.
  • the free end portion of the pick-up rubber 14 is pressed against a portion of the surface of the pick-up roll 12 by a compression spring 13 via a pressure plate 16.
  • Under the pressure plate 16 is fixedly mounted plate spring 15, whose end portion is smoothly curved up-wardly.
  • the underside of the curved portion of the plate spring 15 contacts the circumferential surface of the pick-up roll 12 at a point thereof.
  • the pick-up roll 12 In feeding the documents, the stacked documents on the table 11 approach separating position B, the approach is sensed by a sensing device (not shown), and thus, the pick-up roll 12 is driven to convey the lowermost document of the stacked documents.
  • the leading end of the conveyed document approaches the separating position B after passing under the plate spring 15, and therefore, the frictional force between the document and the surface of the pick-up roll 12 is increased over that when the document simply contacts the separating position B.
  • the paper feeder correspondingly ensures the document conveying. In this case, the front surface of the document contacts the pick-up roll 12, while the back surface of the document contacts the pick-up rubber 14.
  • the front surface of the document contacts the pick-up roll 12 from position A, while the back surface of the document contacts the pick-up rubber 14 from position B. Consequently, the frictional force between the document and the pick-up roll 12 becomes greater than that between the document and the pick-up rubber 14, so that the document just contacting the pick-up roll 12 may be conveyed forwardly, and the remaining documents are prevented from being conveyed just before the separating position B.
  • the document feeding condition is influenced by the kind, size and number of the documents, and the frictional force between the documents and the pick-up rubber 14 is influenced by the temperature and humidity of the surrounding atmosphere, so that the document conveying frequently experiences poor conditions Moreover, long use of the pick-up roll 12 results in changes in the frictional coefficient of the roll and the hardness of the roll material, thereby deteriorating the document feeding
  • a device for feeding a number of stacked documents one by one into a facsimile machine, a copy machine or other device includes a table for loading the stacked documents, a pick-up roll for picking up the lowermost document of the stacked documents, and a pick-up rubber for cooperating with the pick-up roll so as to only convey the lowermost document into the machine, the free end portion of the pick-up rubber being pressed against a portion of the surface of the pick-up roll by a compression spring via a pressure plate, characterized in that there are at least a pair of protrusions each positioned on one end portion of the circumferential surface of the pick-up roll and symmetrically facing each other along a line parallel with the axis of the pick-up roll.
  • FIG. 1 is a schematic side view of the structure of a conventional document feeding device
  • FIGS. 2 and 6 are perspective views of a pick-up roll according to the present invention.
  • FIG. 3 is a schematic structural side view of the inventive document feeding device
  • FIG. 4A-4D are end views of a pick-up roll having protrusions formed thereon, embodied according to the present invention.
  • FIGS. 5A-5D are end views of the pick-up rolls having grooves formed thereon, embodied according to the present invention.
  • the inventive device comprises a table 11 for loading stacked documents, 20 a pick-up roll 12 for picking up the lowermost document of the stacked documents, and a pick-up rubber 14 for cooperating with the pick-up roll so as to only convey the lowermost document into a machine.
  • the free end portion of the pick-up rubber 14 is pressed against a portion of the surface of the pick-up roll 12 by a compression spring 13 via a pressure plate 16.
  • the stacked documents 20 are set on the table 11 mounted on a facsimile or other machine (not shown), and are sensed by a document sensor to drive the pick-up roll 12.
  • the leading end of the documents stacked on the table 11 contacts the pick-up roll 12 which drives the documents to document separating position B from document conveying interval A.
  • the protrusions 40 formed on both end portions of the pick-up roll 12 push the documents 20 upwardly in the interval AB, thereby ensuring effective conveyance of the document in the interval AB.
  • the shape and number of the protrusions 40 may be suitably determined according to the facsimile or other machine used.
  • the plate spring 15 is raised by the protrusions 40 so as to interpose the documents 20 between the spring 15 and the pick-up roll 12.
  • the documents 20 set on the table 11 are conveyed by the frictional force between the protrusions 40 and the documents 20 in the interval AB, since they are interposed between the spring 15 and the pick-up roll 12 after passing the position B, they are ensured to be conveyed into the interval BC.
  • the documents 20 are interposed between the pick-up roll 12 and the pick-up rubber 14 under pressure, because the free end portion of the rubber 14 is urged toward the surface of the pick-up roll 12 by the compression spring 13 via the pressure plate 16. Consequently, only the lowermost document contacting the pick-up roll 12 is conveyed because the remaining documents experience the frictional forces between them, or between them and the pick-up rubber 14.
  • the shape of the protrusions formed on both end portions of the pick-up roll 12 may have various forms as shown in FIGS. 4A-4D, or otherwise, instead of the protrusions, grooves 30 of various forms may be made in both end portions of the pick-up roll, as shown in FIGS. 5A-5D and FIG. 6. Then, the documents 20 may be inserted into the grooves of the rotating pick-up roll 12. Subsequently, the document 20 contacts the edge of a groove positioned in the rotational direction of the pick-up roll 12, thereby being raised slightly, so that the lowermost document contacts the roll surface over a relatively wide area, increasing the frictional force between the pick-up roll 12 and the document. Hence, only the lowermost document is conveyed.
  • the frictional force between the pick-up roll 12 and the conveyed document is designed to be greater than the sum of the frictional force between the documents and greater than that between the document and the pick-up rubber 14, and in addition, greater than that between the document and the table 11.
  • the documents 20 are pressed between the pick-up rubber 14 and the pick-up roll 12 by the cooperation of the spring 13 and the pressure plate 16, so that only the lowermost document just contacting the pick-up roll 12 is conveyed.
  • the inventive document feeding device for a facsimile causes the documents on the loading table to be easily moved to the document separating position, thereby improving reliability of the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US07/485,490 1989-02-28 1990-02-27 Device for feeding paper into a facsimile system, copy machine or other device Expired - Lifetime US5277416A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19892472 1989-02-28
KR1019890002472A KR900013763A (ko) 1989-02-28 1989-02-28 모사전송기의 원고 급지장치

Publications (1)

Publication Number Publication Date
US5277416A true US5277416A (en) 1994-01-11

Family

ID=19284158

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/485,490 Expired - Lifetime US5277416A (en) 1989-02-28 1990-02-27 Device for feeding paper into a facsimile system, copy machine or other device

Country Status (3)

Country Link
US (1) US5277416A (ko)
KR (1) KR900013763A (ko)
GB (1) GB2228473B (ko)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537227A (en) * 1994-10-14 1996-07-16 Hewlett-Packard Company Paper picking and separator system for facsmile or copy machine
US5573338A (en) * 1993-12-27 1996-11-12 Pfu Limited Automatic paper feeder and frame structure of document input device
EP0706895A3 (en) * 1994-10-14 1998-02-18 Hewlett-Packard Company Asymmetrical paper separator roller for facsimile or copy machine
US6010126A (en) * 1998-04-23 2000-01-04 Dbtel Incorporated Sheet-by-sheet paper feeding structure
US6457707B1 (en) 2000-11-22 2002-10-01 Hewlett-Packard Co. Automatic document feeder
US20060157922A1 (en) * 2004-09-24 2006-07-20 Carter Daniel L Roller with recessed kicker feature
US20070228643A1 (en) * 2006-04-03 2007-10-04 Pfu Limited Sheet feeder
CN101097449B (zh) * 2006-06-30 2011-06-22 Nautilus晓星株式会社 具有防止堆叠辊旋转的结构的自动柜员机
US20130293938A1 (en) * 2008-06-20 2013-11-07 Brother Kogyo Kabushiki Kaisha Sheet feeder, image scanner provided with the sheet feeder, and printer provided with the image scanner
RU2525780C2 (ru) * 2012-12-04 2014-08-20 Андрей Юрьевич Ильиных Станок для изготовления прорезей в картонных заготовках
US20190135564A1 (en) * 2016-06-02 2019-05-09 Canon Denshi Kabushiki Kaisha Document feeding device

Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE48809C (de) * H. L. JOHNSON in 40 Piccadilly W., County of Middlesex, England Hutmachermaafs
US175487A (en) * 1876-03-28 Improvement in feeding devices for stamp-canceling machines
US1072846A (en) * 1905-10-21 1913-09-09 James F Goodridge Sheet-feeding mechanism.
FR48704E (fr) * 1937-01-26 1938-06-21 Perfectionnements pour cycles, motocycles et dérivés
US2614837A (en) * 1949-12-21 1952-10-21 Eastman Kodak Co Document feeding device
US2726862A (en) * 1952-03-20 1955-12-13 Elliott Addressing Machine Co Sheet feeding apparatus
US2779593A (en) * 1953-07-08 1957-01-29 Cummins Chicago Corp Feeder for checks and like paper
US4239709A (en) * 1978-05-29 1980-12-16 Otsuka Pharmaceutical Co., Ltd. Process for preparing optically active oxazaphosphorins
US4269403A (en) * 1978-11-06 1981-05-26 Stephens Systems, Inc. Worksheet presenting apparatus
US4368880A (en) * 1980-08-13 1983-01-18 Masaaki Shimizu Machine for feeding sheets of paper
JPS5948407A (ja) * 1982-09-13 1984-03-19 Hodogaya Chem Co Ltd 植物生育調節剤
JPS6148601A (ja) * 1984-08-11 1986-03-10 Aisin Warner Ltd アキュ−ムレ−タ
JPS6148604A (ja) * 1984-08-10 1986-03-10 Matsushita Refrig Co パワ−エレメント
JPS61166440A (ja) * 1985-01-17 1986-07-28 Matsushita Graphic Commun Syst Inc 自動給紙装置
US4635922A (en) * 1984-10-29 1987-01-13 Pitney Bowes Inc. Envelope feeding apparatus
US4718655A (en) * 1984-11-28 1988-01-12 Hitachi, Ltd. Apparatus for handling paper sheets
JPS6348804A (ja) * 1986-08-19 1988-03-01 松下電器産業株式会社 チツプ部品の電極処理装置
US4775140A (en) * 1987-10-26 1988-10-04 Pitney Bowes Inc. Envelope supply pack retainer
JPS6448911A (en) * 1987-08-19 1989-02-23 Takenaka Komuten Co Bridge construction method
US4861013A (en) * 1985-04-15 1989-08-29 Mita Industrial Co., Ltd. Mechanism for preventing the feeding of more than one sheet of paper at one time
US4865306A (en) * 1987-03-02 1989-09-12 Mita Industrial Co., Ltd. Friction pad fixture
US4887806A (en) * 1987-02-23 1989-12-19 Sharp Kabushiki Kaisha Paper transport system for apparatus including facsmile and photocopying machines
US4895358A (en) * 1986-02-20 1990-01-23 Omron Tateisi Electronics Co. Note feeding device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1466561A (en) * 1974-02-22 1977-03-09 Shandon Southern Instr Ltd Dispensers for thin flat rigid articles

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE48809C (de) * H. L. JOHNSON in 40 Piccadilly W., County of Middlesex, England Hutmachermaafs
US175487A (en) * 1876-03-28 Improvement in feeding devices for stamp-canceling machines
US1072846A (en) * 1905-10-21 1913-09-09 James F Goodridge Sheet-feeding mechanism.
FR48704E (fr) * 1937-01-26 1938-06-21 Perfectionnements pour cycles, motocycles et dérivés
US2614837A (en) * 1949-12-21 1952-10-21 Eastman Kodak Co Document feeding device
US2726862A (en) * 1952-03-20 1955-12-13 Elliott Addressing Machine Co Sheet feeding apparatus
US2779593A (en) * 1953-07-08 1957-01-29 Cummins Chicago Corp Feeder for checks and like paper
US4239709A (en) * 1978-05-29 1980-12-16 Otsuka Pharmaceutical Co., Ltd. Process for preparing optically active oxazaphosphorins
US4269403A (en) * 1978-11-06 1981-05-26 Stephens Systems, Inc. Worksheet presenting apparatus
US4368880A (en) * 1980-08-13 1983-01-18 Masaaki Shimizu Machine for feeding sheets of paper
JPS5948407A (ja) * 1982-09-13 1984-03-19 Hodogaya Chem Co Ltd 植物生育調節剤
JPS6148604A (ja) * 1984-08-10 1986-03-10 Matsushita Refrig Co パワ−エレメント
JPS6148601A (ja) * 1984-08-11 1986-03-10 Aisin Warner Ltd アキュ−ムレ−タ
US4635922A (en) * 1984-10-29 1987-01-13 Pitney Bowes Inc. Envelope feeding apparatus
US4718655A (en) * 1984-11-28 1988-01-12 Hitachi, Ltd. Apparatus for handling paper sheets
JPS61166440A (ja) * 1985-01-17 1986-07-28 Matsushita Graphic Commun Syst Inc 自動給紙装置
US4861013A (en) * 1985-04-15 1989-08-29 Mita Industrial Co., Ltd. Mechanism for preventing the feeding of more than one sheet of paper at one time
US4895358A (en) * 1986-02-20 1990-01-23 Omron Tateisi Electronics Co. Note feeding device
JPS6348804A (ja) * 1986-08-19 1988-03-01 松下電器産業株式会社 チツプ部品の電極処理装置
US4887806A (en) * 1987-02-23 1989-12-19 Sharp Kabushiki Kaisha Paper transport system for apparatus including facsmile and photocopying machines
US4865306A (en) * 1987-03-02 1989-09-12 Mita Industrial Co., Ltd. Friction pad fixture
JPS6448911A (en) * 1987-08-19 1989-02-23 Takenaka Komuten Co Bridge construction method
US4775140A (en) * 1987-10-26 1988-10-04 Pitney Bowes Inc. Envelope supply pack retainer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573338A (en) * 1993-12-27 1996-11-12 Pfu Limited Automatic paper feeder and frame structure of document input device
US5537227A (en) * 1994-10-14 1996-07-16 Hewlett-Packard Company Paper picking and separator system for facsmile or copy machine
EP0706894A3 (en) * 1994-10-14 1998-02-18 Hewlett-Packard Company Paper picking and separator system for facsimile or copy machine
EP0706895A3 (en) * 1994-10-14 1998-02-18 Hewlett-Packard Company Asymmetrical paper separator roller for facsimile or copy machine
US6010126A (en) * 1998-04-23 2000-01-04 Dbtel Incorporated Sheet-by-sheet paper feeding structure
US6457707B1 (en) 2000-11-22 2002-10-01 Hewlett-Packard Co. Automatic document feeder
US20060157922A1 (en) * 2004-09-24 2006-07-20 Carter Daniel L Roller with recessed kicker feature
US7401780B2 (en) * 2004-09-24 2008-07-22 Lexmark International, Inc. Roller with recessed kicker feature
US20070228643A1 (en) * 2006-04-03 2007-10-04 Pfu Limited Sheet feeder
CN101097449B (zh) * 2006-06-30 2011-06-22 Nautilus晓星株式会社 具有防止堆叠辊旋转的结构的自动柜员机
US20130293938A1 (en) * 2008-06-20 2013-11-07 Brother Kogyo Kabushiki Kaisha Sheet feeder, image scanner provided with the sheet feeder, and printer provided with the image scanner
US9457973B2 (en) * 2008-06-20 2016-10-04 Brother Kogyo Kabushiki Kaisha Sheet feeder, image scanner provided with the sheet feeder, and printer provided with the image scanner
RU2525780C2 (ru) * 2012-12-04 2014-08-20 Андрей Юрьевич Ильиных Станок для изготовления прорезей в картонных заготовках
US20190135564A1 (en) * 2016-06-02 2019-05-09 Canon Denshi Kabushiki Kaisha Document feeding device
US11104532B2 (en) * 2016-06-02 2021-08-31 Canon Denshi Kabushiki Kaisha Document feeding device

Also Published As

Publication number Publication date
GB2228473B (en) 1994-03-23
GB9004449D0 (en) 1990-04-25
GB2228473A (en) 1990-08-29
KR900013763A (ko) 1990-09-05

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